package io;

import java.io.*;

public class BOSDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("est.exe");
        BufferedInputStream bis = new BufferedInputStream(fis);

        FileOutputStream fos = new FileOutputStream("eeeee.exe");
        BufferedOutputStream bos = new BufferedOutputStream(fos);

        int d;
        long start = System.currentTimeMillis();
        while ((d = bis.read())!=-1){
            bos.write(d);
        }

        long end = System.currentTimeMillis();

        System.out.println("复制完毕，耗时："+(end-start)+"毫秒");

        bis.close();
        bos.close();






    }
}
